:root {
  --bg: #f3efe6;
  --bg-accent: #e4ddd0;
  --ink: #1c1915;
  --muted: #5c564c;
  --line: #c9c0b0;
  --card: #fffaf2;
  --accent: #0d6b5c;
  --accent-ink: #f4fffc;
  --warn: #8a4b12;
  --warn-bg: #fff1de;
  --danger: #8b1e1e;
  --danger-bg: #fde8e8;
  --ok: #1f6b3a;
  --ok-bg: #e5f6eb;
  --mono: "IBM Plex Mono", "ui-monospace", "Cascadia Code", monospace;
  --sans: "IBM Plex Sans", "Segoe UI", sans-serif;
  --radius: 10px;
  --shadow: 0 12px 40px rgba(28, 25, 21, 0.08);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  font-family: var(--sans);
  color: var(--ink);
  background:
    radial-gradient(1200px 500px at 10% -10%, #d9ece7 0%, transparent 55%),
    radial-gradient(900px 400px at 100% 0%, #f0e2c8 0%, transparent 50%),
    var(--bg);
}

body {
  line-height: 1.45;
}

a {
  color: var(--accent);
}

.wrap {
  width: min(1100px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 2rem 0 4rem;
}

header.hero {
  display: grid;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.brand {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  margin: 0;
}

.lede {
  margin: 0;
  max-width: 48rem;
  color: var(--muted);
  font-size: 1.05rem;
}

.bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 1rem;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  margin-bottom: 1.25rem;
}

.user {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.user img {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--line);
}

.grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: 1.2fr 0.8fr;
}

@media (max-width: 900px) {
  .grid {
    grid-template-columns: 1fr;
  }
}

.panel {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.1rem 1.2rem 1.3rem;
}

.panel h2 {
  margin: 0 0 0.85rem;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
}

.panel h3 {
  margin: 1.25rem 0 0.6rem;
  font-size: 0.92rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--muted);
}

.row {
  display: grid;
  gap: 0.75rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-bottom: 0.75rem;
}

.row.three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.row.one {
  grid-template-columns: 1fr;
}

@media (max-width: 700px) {
  .row,
  .row.three {
    grid-template-columns: 1fr;
  }
}

label {
  display: grid;
  gap: 0.3rem;
  font-size: 0.86rem;
  color: var(--muted);
}

label strong {
  color: var(--ink);
  font-weight: 600;
}

label .src {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--accent);
}

input,
select,
textarea,
button {
  font: inherit;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink);
  border-radius: 8px;
  padding: 0.55rem 0.7rem;
}

input:focus,
select:focus,
textarea:focus {
  outline: 2px solid rgba(13, 107, 92, 0.35);
  border-color: var(--accent);
}

textarea {
  min-height: 4.5rem;
  resize: vertical;
  font-family: var(--mono);
  font-size: 0.82rem;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 0.5rem;
}

button,
.btn {
  appearance: none;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink);
  border-radius: 999px;
  padding: 0.55rem 1rem;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-weight: 600;
}

button.primary,
.btn.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-ink);
}

button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.banner {
  padding: 0.75rem 0.9rem;
  border-radius: 8px;
  margin-bottom: 0.9rem;
  font-size: 0.92rem;
}

.banner.warn {
  background: var(--warn-bg);
  color: var(--warn);
}

.banner.danger {
  background: var(--danger-bg);
  color: var(--danger);
}

.banner.ok {
  background: var(--ok-bg);
  color: var(--ok);
}

.banner.hidden {
  display: none;
}

.preview {
  font-family: var(--mono);
  font-size: 0.75rem;
  background: #1c1915;
  color: #f4efe6;
  border-radius: 8px;
  padding: 0.9rem;
  overflow: auto;
  max-height: min(70vh, 640px);
  white-space: pre-wrap;
  word-break: break-word;
}

.hint {
  font-size: 0.85rem;
  color: var(--muted);
  margin: 0.35rem 0 0;
}

.req {
  color: var(--danger);
  font-weight: 700;
  margin-left: 0.15rem;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin: 0.4rem 0 0.8rem;
}

.chip {
  font-family: var(--mono);
  font-size: 0.72rem;
  padding: 0.2rem 0.45rem;
  border-radius: 999px;
  background: var(--bg-accent);
  color: var(--ink);
}

.checksum-block {
  margin: 1rem 0 1.1rem;
  padding: 0;
  border: 2px solid var(--accent);
  border-radius: calc(var(--radius) + 2px);
  background:
    linear-gradient(180deg, #e8f6f2 0%, #fffaf2 42%);
  box-shadow: 0 0 0 3px rgba(13, 107, 92, 0.12);
  overflow: hidden;
}

.checksum-heading {
  padding: 1rem 1.1rem 0.85rem;
  border-bottom: 1px solid rgba(13, 107, 92, 0.22);
}

.checksum-kicker {
  margin: 0 0 0.25rem;
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
}

.checksum-heading h3 {
  margin: 0;
  font-size: clamp(1.15rem, 2.5vw, 1.45rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  text-transform: none;
  color: var(--ink);
}

.checksum-lede {
  margin: 0.45rem 0 0;
  color: var(--muted);
  font-size: 0.92rem;
  max-width: 40rem;
}

.checksum-block .drop {
  margin: 0;
  border: none;
  border-radius: 0;
  padding: 1.15rem 1.1rem 1.25rem;
  background: transparent;
}

.drop {
  border: 1.5px dashed var(--line);
  border-radius: 8px;
  padding: 0.9rem;
  text-align: center;
  background: #fff;
  color: var(--muted);
  font-size: 0.9rem;
}

.drop.drag {
  border-color: var(--accent);
  background: #eef8f5;
}

.drop-required.hashed {
  background: var(--ok-bg);
}

.file-pick {
  display: inline;
  color: var(--accent);
  cursor: pointer;
}

.checksum-status {
  margin-top: 0.65rem;
  font-weight: 600;
}

.checksum-status.pending {
  color: var(--warn);
}

.checksum-status.ok {
  color: var(--ok);
}

.checksum-status.err {
  color: var(--danger);
}

.checksum-block.done {
  border-color: var(--ok);
  box-shadow: 0 0 0 3px rgba(31, 107, 58, 0.12);
  background: linear-gradient(180deg, #e5f6eb 0%, #fffaf2 50%);
}

.checksum-block.done .checksum-kicker {
  color: var(--ok);
}

footer.site {
  margin-top: 1.5rem;
  color: var(--muted);
  font-size: 0.85rem;
}

.locked .needs-auth {
  opacity: 0.45;
  pointer-events: none;
}